Bridge damping support

Abstract

The utility model discloses a bridge vibration reduction support, the main body of the bridge vibration reduction support is composed of four inclined high-damping rubber steel plate laminations which are symmetrically and circumferentially arranged and a friction assembly which is arranged at the center of the device, and the high-damping rubber laminations are connected with an upper connecting plate and a lower connecting plate of the support through trapezoidal steel plates which are consistent in specification; the upper connecting plate is connected with the top of the friction assembly, the friction assembly is connected with the lower connecting plate through a #-shaped steel component with the same thickness as the trapezoidal connecting plate, and meanwhile the eight lower trapezoidal plates on the lower portion of the support are connected with the #-shaped steel component to form a reliable and stable structure. Through the arrangement of the inclined high-damping rubber steel plate lamination and the friction assembly structure, the vertical vibration reduction effect of the bridge support can be effectively improved, the comfort of a driver is improved, and the phenomenon that a bridge is damaged due to the impact of heavy-load vehicles is avoided; and meanwhile, the novel vibration reduction support is designed to be circular in structure, and finite element simulation verifies that the rigidity of the support in each horizontal direction is the same, so that the novel vibration reduction support is suitable for a curved beam bridge and is simple and convenient to mount.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge bearings, and particularly relates to a bridge vibration damping bearing. Background Art

[0002] In bridge engineering, vibration damping bearings are crucial components. Their main function is to support the bridge structure and allow it to move and deform freely under various external influences (such as temperature changes, vehicle loads, and earthquakes, etc.). Traditional bridge vibration damping bearings usually consist of metal or rubber materials, which can absorb and disperse vibrations and stresses caused by bridge use and natural conditions. However, the vibration damping bearings of the existing technology have some limitations and deficiencies:

[0003] 1) Durability problems: Traditional materials such as ordinary rubber or metal are prone to fatigue damage, aging, or corrosion after long-term exposure to repeated loads and environmental erosion, thus reducing their service life and reliability.

[0004] 2) High maintenance requirements: Many types of vibration damping bearings need to be regularly inspected and maintained to ensure that their performance is not affected. This not only increases the operating cost but also may lead to accidental structural failures due to improper maintenance.

[0005] 3) Limited tuning ability: Traditional vibration damping bearing designs often lack effective tuning mechanisms to adapt to vibrations of different frequencies, which limits their performance optimization under different environments and conditions.

[0006] 4) Poor environmental adaptability: Some vibration damping bearing materials are sensitive to temperature changes, and extreme climate conditions may affect their performance, especially in high-temperature or low-temperature environments.

[0007] 5) Installation complexity: The design and installation processes of some vibration damping bearings are complex and require professional technology and equipment, increasing the construction difficulty and cost.

[0008] The deficiencies and problems existing in the bridge vibration damping bearings used in these actual projects all urgently need to be solved and improved. Summary of the Utility Model

[0009] The utility model provides a bridge vibration damping bearing, which can solve the problems of weak vertical vibration damping ability, excessive vertical displacement, and complex installation of high-damping rubber bearings in the existing technology.

[0010] To solve the above problems, the technical solutions provided by the utility model are as follows:

[0011] An embodiment of the present utility model provides a bridge vibration damping bearing, which includes an upper connecting plate (1), an upper trapezoidal steel plate (4) located below the upper connecting plate (1), an inclined thick-layer high-damping rubber steel plate laminate (3) located below the upper trapezoidal steel plate (4), a lower trapezoidal steel plate (5) below the inclined thick-layer high-damping rubber steel plate laminate (3), and a lower connecting plate (2) located below the lower trapezoidal steel plate (5). Among them, the lower connecting plate (2) and the upper connecting plate (1) are also connected by a "well"-shaped steel component (6) and an upper friction component (7), and the "well"-shaped steel component (6) is connected to the lower trapezoidal steel plate (5).

[0012] The inclined high-damping rubber steel plate laminate (3) includes a first steel plate (31), a first thick-layer high-damping rubber plate (32) located above the first steel plate (31), and a second steel plate (33) located above the first thick-layer high-damping rubber plate (32). The first steel plate (31), the first thick-layer high-damping rubber plate (32), and the second steel plate (33) are adhesively fixed by vulcanization technology.

[0013] According to an optional embodiment of the present utility model, the thickness of the first steel plate (31) is 30-40 mm, the thickness of the first high-damping thick-layer rubber plate (32) is 15-20 mm, and the thickness of the second steel plate (33) is 3-5 mm.

[0014] According to an optional embodiment of the present utility model, the upper connecting plate (1) is of a circular structure, and 4 first threaded holes (11) are uniformly arranged on the upper connecting plate (1).

[0015] According to an optional embodiment of the present utility model, the upper trapezoidal steel plate (4), the inclined thick-layer high-damping rubber steel plate laminate (3), the "well"-shaped steel component (6), and the lower trapezoidal steel plate (5) are all symmetrically distributed in a circular pattern on the lower connecting plate (2).

[0016] According to an optional embodiment of the present utility model, the long right-angled sides of 4 groups of symmetrically distributed lower trapezoidal steel plates (5) are all connected to the "well"-shaped steel component (6).

[0017] According to an optional embodiment of the present utility model, the lower connecting plate (2) is of a circular structure, and 4 second threaded holes (21) are uniformly arranged on the lower connecting plate (2).

[0018] According to an optional embodiment of the present utility model, the friction assembly (7) includes a friction outer cylinder (71), a circular high-damping rubber block (72) installed inside the friction outer cylinder (71), and a friction cylinder (73) connected to the upper connecting plate (1). There is friction between the outer wall of the friction cylinder (73) and the inner wall of the friction outer cylinder (71), and the bottom of the friction cylinder (73) will contact the surface of the circular high-damping rubber block (72) when the vehicle is running.

[0019] Beneficial effects:

[0020] (1) Aiming at the deficiency of the traditional high-damping rubber bearing in terms of vertical vibration reduction ability, the bridge vibration reduction device of the present utility model is carefully designed. By utilizing the shear stiffness of the rubber and the friction energy dissipation between the friction components, a multi-level vertical vibration reduction function is realized. In practical applications, the damping and energy dissipation capacity of the bearing can be adjusted by adjusting the inclination angle of the inclined thick-layer high-damping rubber steel plate laminate and the friction coefficient between the friction components, ensuring that it has excellent vertical bearing capacity, effective horizontal restoring force, and remarkable damping performance. It effectively reduces the vibration and noise pollution caused by vehicle driving. This not only improves the comfort of bridge use but also helps protect the surrounding environment from noise interference. In addition, it has good elastic characteristics to adapt to the rotation requirements of the bridge beam end and has sufficient shear deformation ability to cope with the horizontal displacement of the upper beam body.

[0021] (2) Aiming at the deficiency that the square bearing is not suitable for curved girder bridges, the bridge vibration reduction bearing of the present utility model adopts a circular structure. This unique design not only optimizes the space utilization efficiency and bearing capacity of the bearing but also enhances its overall structural stability. Due to the uniform stress distribution characteristics of the circular bearing, it can more effectively disperse the load from the bridge structure, reduce the local stress concentration phenomenon, and thus extend the overall service life of the bridge. At the same time, through precise finite element simulation analysis, the horizontal stiffness in each horizontal direction of the new vibration reduction bearing is the same, and the horizontal stiffness of the bearing can be controlled by changing the thickness of the friction components.

[0022] (3) Aiming at the problems of too low vertical stiffness and too large vertical displacement of the traditional vertical vibration reduction bearing, the friction assembly of the bridge vibration reduction bearing of the present utility model can not only dissipate energy and reduce vibration but also play a role in limiting the position. This design not only enhances the bearing's control ability over the vertical movement of the bridge but also improves its safety performance under extreme load conditions. Through the limiting mechanism, the bearing can avoid damage to the bridge structure due to excessive displacement while ensuring the damping effect. In addition, the presence of the vertical limiting device enables the bearing to more effectively suppress the vertical vibration of the bridge. Especially when encountering sudden vibration events such as earthquakes, it can limit the abnormal displacement of the bridge structure and protect the bridge piers and beam bodies from damage. This not only improves the overall seismic performance of the bridge but also ensures the safe and smooth traffic. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0024] Figure 1 It is a schematic structural diagram of a bridge vibration damping bearing provided by an embodiment of the present application.

[0025] Figure 2 It is a three-dimensional structural diagram of a stacked inclined high-damping rubber steel plate provided by an embodiment of the present application.

[0026] Figure 3 It is a plan structural diagram of a stacked inclined high-damping rubber steel plate provided by an embodiment of the present application.

[0027] Figure 4 It is a three-dimensional structural diagram of a friction assembly provided by an embodiment of the present application.

[0028] Figure 5 It is a cross-sectional view of a friction assembly provided by an embodiment of the present application.

[0029] Figure 6 It is a structural diagram of a "well"-shaped steel component provided by an embodiment of the present application.

[0030] Figure 7 It is a structural diagram of an upper connecting plate of a bearing provided by an embodiment of the present application.

[0031] Figure 8 It is a structural diagram of a lower connecting plate of a bearing provided by an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0033] Such as Figure 1As shown in the figure, an embodiment of the present utility model provides a bridge vibration damping bearing, which includes an upper connecting plate 1, an upper trapezoidal steel plate 4 located below the upper connecting plate 1, an inclined thick high-damping rubber steel plate laminate 3 located below the upper trapezoidal steel plate 4, a lower trapezoidal steel plate 5 located below the inclined thick high-damping rubber steel plate laminate 3, and a lower connecting plate 2 located below the lower trapezoidal steel plate 5. Among them, the lower connecting plate 2 and the upper connecting plate 1 are also connected through a "well"-shaped steel component 6 and a friction component 7 at the upper part, and the "well"-shaped steel component 6 is connected to the lower trapezoidal steel plate 5 by welding.

[0034] As Figure 2 and Figure 3 shown in the figure, the inclined thick high-damping rubber steel plate laminate 3 includes a first steel plate 31, a first thick high-damping rubber plate 32 located above the first steel plate 31, and a second steel plate 33 located above the first thick high-damping rubber plate 32. The first steel plate 31, the first thick high-damping rubber plate 32 and the second steel plate 33 are adhesively fixed by vulcanization technology. The thickness of the first steel plate 31 is preferably 30 - 40 mm, the preferred thickness of the first high-damping rubber plate 32 is 15 - 20 mm, and the preferred thickness of the second steel plate 33 is 3 - 5 mm. The inclined thick high-damping rubber steel plate laminate 3 is connected to the upper trapezoidal steel plate 4 and the lower trapezoidal steel plate 5 by welding, with a simple and stable structure. In practical applications, the damping and energy dissipation capacity of the bearing can be adjusted by adjusting the inclination angle of the inclined thick high-damping rubber steel plate laminate 3 to meet the needs of different bridges.

[0035] As Figure 4 and Figure 5 shown in the figure, the friction component 7 includes a friction outer cylinder 71, a circular high-damping rubber block 72 installed inside the friction outer cylinder 71, and a friction cylinder 73. The bottom of the friction outer cylinder 71 is fixedly connected to the top of the "well"-shaped steel component 6, the top of the friction cylinder 73 is fixedly connected to the bottom of the upper connecting plate 1 of the bearing, the bottom and side surfaces of the circular high-damping rubber block 72 are vulcanized and connected to the inner surface of the friction outer cylinder 71, and there is friction between the outer wall of the friction cylinder 73 and the inner wall of the friction outer cylinder 71 to provide partial vertical vibration damping capacity. The bottom of the friction cylinder 73 will contact the surface of the circular high-damping rubber block 72 when the vehicle is driving, avoiding direct contact between steel components, extending the service life. At the same time, the friction component 3 also has a limiting function, which can ensure that the bearing will not have a large vertical displacement under the action of heavy vehicle loads, ensure that the vertical displacement of the bridge is within a safe range, and ensure driving safety and comfort.

[0036] As Figure 6As shown, the "grid"-shaped steel component 6 has a "grid" structure, with a long service life, good wear resistance, material savings, a light and reliable structure. The top of the "grid"-shaped steel component 6 is fixedly connected to the bottom of the friction assembly 3. The eight protruding sides of the "grid"-shaped steel component 6 are fixedly connected to the long right-angle sides of the eight lower trapezoidal steel plates by welding. The bottom of the "grid"-shaped steel component 6 is fixedly connected to the top of the lower connecting plate 2.

[0037] As Figure 7 and Figure 8 shown, both the upper connecting plate 1 and the lower connecting plate 2 are circular structures, and the size of the upper connecting plate 1 is slightly larger than that of the lower connecting plate 2. Four first threaded holes 11 are evenly arranged on the upper connecting plate 1, and four second threaded holes 21 are evenly arranged on the lower connecting plate 2. The upper connecting plate forms a firm bolt connection with the upper structure of the bridge through the first threaded holes 11, and the lower connecting plate 2 of the bridge is fixedly connected to the bridge pier through the second threaded holes 21. The upper connecting plate 1 and the lower connecting plate 2 achieve an effective connection between the upper structure and the pier and transfer the load.

[0038] In summary, although the present utility model has been disclosed above with preferred embodiments, the above are only the embodiments of the present utility model. Those of ordinary skill in the art can understand that various modifications and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. These equivalent modifications and variations are all included within the scope defined by the claims of this application.

Claims

1. A bridge vibration reduction bearing, characterized in that: It comprises an upper connecting plate (1), an upper trapezoidal steel plate (4) located below the upper connecting plate (1), an inclined thick layer high damping rubber steel plate laminate (3) located below the upper trapezoidal steel plate (4), a lower trapezoidal steel plate (5) below the inclined thick layer high damping rubber steel plate laminate (3), and a lower connecting plate (2) located below the lower trapezoidal steel plate (5), wherein the lower connecting plate (2) and the upper connecting plate (1) are connected via a "well" shaped steel component (6) and an upper friction assembly (7), and the "well" shaped steel component (6) is connected to the lower trapezoidal steel plate (5); The inclined high-damping rubber-steel plate stack (3) comprises a first steel plate (31), a first thick high-damping rubber plate (32) located on the first steel plate (31), and a second steel plate (33) located on the first thick high-damping rubber plate (32); the first steel plate (31), the first thick high-damping rubber plate (32) and the second steel plate (33) are bonded and fixed by using vulcanization technology.

2. A bridge vibration-damping bearing according to claim 1, characterized in that: The thickness of the first steel plate (31) is 30-40 mm, the thickness of the first thick layer high damping rubber plate (32) is 15-20 mm, and the thickness of the second steel plate (33) is 3-5 mm.

3. The bridge vibration-damping bearing according to claim 1, characterized in that: The upper connecting plate (1) is a circular structure, and four first threaded holes (11) are evenly arranged on the upper connecting plate (1).

4. A bridge vibration-damping bearing according to claim 3, characterized in that: The upper trapezoidal steel plate (4), the inclined thick layer high damping rubber steel plate stack (3), the "well" shaped steel component (6), and the lower trapezoidal steel plate (5) are all distributed on the lower connecting plate (2) in a circularly symmetrical manner.

5. The bridge vibration-damping bearing according to claim 4, characterized in that: The long right-angled sides of the four groups of symmetrically distributed lower trapezoidal steel plates (5) are all connected to the "well"-shaped steel component (6).

6. The bridge vibration-damping bearing according to claim 1, characterized in that: The lower connecting plate (2) is a circular structure, and four second threaded holes (21) are evenly arranged on the lower connecting plate (2).

7. The bridge vibration-damping bearing according to claim 1, characterized in that: The friction assembly (7) comprises a friction outer cylinder (71), a circular high-damping rubber block (72) mounted inside the friction outer cylinder (71), and a friction cylinder (73) connected to the upper connecting plate (1); there is friction between the outer wall of the friction cylinder (73) and the inner wall of the friction outer cylinder (71); and the bottom of the friction cylinder (73) and the surface of the circular high-damping rubber block (72) will contact when the vehicle is running.

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